<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="100px"
      v-loading="formLoading"
    >
      <el-form-item label="名称" prop="name">
        <el-input v-model="formData.name" placeholder="请输入名称" />
      </el-form-item>
      <el-form-item label="特征" prop="eigenvalue">
        <el-input v-model="formData.eigenvalue" placeholder="请输入特征" />
      </el-form-item>
      <el-form-item label="类型" prop="type">
        <el-select v-model="formData.type" placeholder="请选择类型">
          <el-option
            v-for="dict in getStrDictOptions(DICT_TYPE.LAYOUT_ELEMENT_TYPE)"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="图标" prop="image">
        <UploadImg v-model="formData.image" />
      </el-form-item>
      <el-form-item label="说明" prop="description">
        <el-input v-model="formData.description" type="textarea" placeholder="请输入说明" />
      </el-form-item>
      <el-form-item label="状态" prop="stateArrayStr">
        <StyleMultiStateFormItem v-model:active-index="activeStateIndex" v-model:state-array="multiStateArray"/>
      </el-form-item>
      <el-form-item label="状态图片" prop="content">
        <UploadImg :model-value="activeState?.content" @update:model-value="updateSate('content',$event)"/>
      </el-form-item>
      <el-form-item label="排序" prop="sort">
        <el-input v-model="formData.sort" placeholder="请输入排序" />
      </el-form-item>

    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import { getStrDictOptions, DICT_TYPE } from '@/utils/dict'
import * as ElementApi from '@/api/yz/element'
import StyleMultiStateFormItem from "@/views/yz/layout/style-form/StyleMultiStateFormItem.vue";
import {ref, watch} from "vue";

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined,
  name: undefined,
  type: undefined,
  image: undefined,
  description: undefined,
  sort: undefined,
  stateArrayStr: undefined,
  eigenvalue: undefined,
})
const formRules = reactive({
  name: [{ required: true, message: '名称不能为空', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (type: string, id?: number) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  resetForm()
  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await ElementApi.getElement(id)
      if(!formData.value.stateArrayStr){
        formData.value.stateArrayStr = JSON.stringify([{
          name: '默认',
          content: '',
          style: '',
          condition: {}
        }])
      }
      multiStateArray.value = JSON.parse(formData.value.stateArrayStr)
    } finally {
      formLoading.value = false
    }
  }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  await formRef.value.validate()
  // 提交请求
  formLoading.value = true
  try {
    if(!formData.value.stateArrayStr){
      formData.value.stateArrayStr = JSON.stringify([{
        name: '默认',
        content: '',
        style: '',
        condition: {}
      }])
    }
    const data = formData.value as unknown as ElementApi.ElementVO
    if (formType.value === 'create') {
      await ElementApi.createElement(data)
      message.success(t('common.createSuccess'))
    } else {
      await ElementApi.updateElement(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    name: undefined,
    type: undefined,
    image: undefined,
    description: undefined,
    sort: undefined,
    stateArrayStr: undefined,
    eigenvalue: undefined,
  }
  formRef.value?.resetFields()
  multiStateArray.value = [{
    name: '默认',
    content: '',
    style: '',
    condition: {}
  }]
  activeStateIndex.value = 0

}
// 处理多状态的样式
const activeStateIndex = ref(0)
const multiStateArray = ref([{
  name: '默认',
  content: '',
  style: '',
  condition: {}
}])
const activeState = computed(()=>{
  try{
    return multiStateArray.value[activeStateIndex.value] || {}
  }catch (e){
    return {
      content: '',
      style: '',
      condition: {}
    }
  }
})
const updateSate = (field, value) => {
  if(multiStateArray.value[activeStateIndex.value]){
    multiStateArray.value[activeStateIndex.value][field] = value
  }
}
watch(multiStateArray, (val) =>{
  formData.value.stateArrayStr = JSON.stringify(multiStateArray.value)
}, {
  deep: true
})
</script>
